┌─ Escherichia coli ED1a (1)  
                                                             ┌┴──── Escherichia coli (12-297/297) CFT073 (6)  
                                                         ┌───┴─────── Escherichia coli (12-297/297) F11 (4)  
                               ┌─────────────────────────┴─ Escherichia coli TA206   
            ┌──────────────────┴─ Escherichia coli WV_060327   
    ┌───────┴──────────┬──────── Escherichia coli SE15   
   ┌┤                  └──── Escherichia coli M605   
   │└──────────────────────────┬──── Escherichia coli NC101   
┌──┤                           └─ Escherichia coli (12-297/297) APEC O1 (6)  
┤  └──────── Escherichia coli (12-297/297) E2348/69 (2)  
│           ┌─────────────── Escherichia coli M718   
└───────────┤   ┌─────────── Escherichia coli SMS-3-5   
            └───┤    ┌────────────────── Escherichia coli TA143   
                └────┤  ┌───────────────── Escherichia coli MS 69-1   
                     │  │                  ┌────────────── Escherichia coli FVEC1302 (3)  
                     └──┤                ┌─┴─────────────────── Escherichia coli B354   
                        │     ┌──────────┴─────── Escherichia coli TA280   
                        └─────┤┌─────────────────────────────── Escherichia coli H299   
                              └┤       ┌─────────── Escherichia coli IAI39 (1)  
                               └───────┤    ┌─ Escherichia coli O111:H- str. 11128 (1)  
                                       │   ┌┴─────────── Escherichia coli (12-297/297) 042 (1)  
                                       └───┤   ┌─────────── Escherichia coli (12-297/297) HS (1)  
                                           └───┤┌─ Escherichia coli K12 (44)  
                                               └┤ ┌─────── Escherichia coli B185   
                                                └┬┴──── Escherichia coli ETEC H10407   
                                                 └┬──── Escherichia coli MS 124-1 (1)  
                                                  └──── Escherichia coli MS 107-1   
  

  
Putative electron transfer flavoprotein subunit ygcQ
 (16)
  
Putative electron transfer flavoprotein subunit YgcQ
 (8)
  
Electron transfer flavoprotein, alpha subunit
 (3)